Cass Weiland offers a wide range of strategic legal advice and counsel built on his depth of experience as a trial lawyer. Focusing on a diverse range of issues, he has tried jury cases in federal courts around the country, and has appeared in more than 25 different district courts and six courts of appeal. He has also served as lead trial counsel in state court cases throughout Texas. Numerous cases he has handled have resulted in published opinions.

    Commercial Litigation

    Cass is an accomplished commercial litigator and business lawyer who has served as lead counsel in civil cases involving contracts, securities, energy, construction and health care, as well as employment law and federal civil rights matters. He has counseled businesses on corporate and strategic issues and has represented companies of all sizes. Cass has handled arbitrations before the American Arbitration Association, Federal Mediation and Conciliation Service and FINRA. He has mediated numerous cases for his clients and served as a court-appointed mediator.

    International Matters

    Cass is frequently called on to handle legal issues involving controversies arising in whole or in part abroad. He has been retained to work on matters arising in the Middle East, the Caribbean and Central America. He has appeared before the International Tribunal for the Law of the Sea in Hamburg and traveled extensively in Europe on business-related matters.

    White-Collar Criminal Defense

    While counseling businesses and individuals embroiled in government controversies, Cass has represented clients accused of fraud, environmental crimes, tax offenses, antitrust and securities violations and a diverse range of other alleged misconduct. This practice often requires him to deal with a range of government agencies, from the Department of Justice and the Securities and Exchange Commission, to the Internal Revenue Service, Departments of Defense, Agriculture and Health and Human Services among others. He has also represented companies conducting internal investigations, as well as corporate victims of fraudulent business schemes.

    Further enhancing Cass’ ability to deal with complex issues is his government experience, including serving as:

    • Chief Counsel and Staff Director of the United States Senate Permanent Subcommittee on Investigations
    • Trial Attorney in the Public Integrity Section, Criminal Division, Department of Justice
    • Assistant Director (Enforcement), Commodity Futures Trading Commission

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    • University of Texas, J.D.
    • College of William & Mary, A.B.


    • District of Columbia
    • Texas


    • U.S. Court of Appeals for 4th, 5th, 7th, 10th and 11th and District of Columbia Circuits
    • U.S. Court of Federal Claims
    • U.S. Court of International Trade
    • U.S. District Court for the District of Colorado
    • U.S. District Court for the Western District of Oklahoma
    • U.S. District Courts for the Eastern, Northern, Southern, and Western Districts of Texas
    • U.S. Supreme Court

    Memberships and Affiliations

    • Texas Bar Foundation
    • AV rated by Martindall-Hubbell
    • Texas Super Lawyer, Texas Super Lawyers 2003-13 and 2017-19
    • Super Lawyer, Super Lawyers Business Edition 2010

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